[Joe Sr.]

Can I use regular old Red Star brewers yeast for a FFT?

Is there any reason that wouldn't work?

I'm growing up a big starter to pitch into a stalled fermentation and want to run a FFT to see what I might expect.

[denny]

Yep, that's fine.

[HoosierBrew]

Same thing I use, too.

[tommymorris]

Fast Fourier Transform?

Seriously though. What is a FFT?

[Joe Sr.]

Fast Fermentation Test.  Or something similar.

To check for fermentability of your wort with a small sample and ton of yeast.

[tommymorris]

Thanks!

[HoosierBrew]

Yeah, it's helful to judge whether a beer stalled or is at FG. Also is helpful for knowing when to keg a beer for spunding. Cheap n easy.
 

[Joe Sr.]

Fermenting like mad in the FFT.  Stalled at 1.040 in the fermenter.  Apparently the bread yeast works just fine.

Weather's been so crazy here lately I must have had a temp drop in the basement that stalled it out.  All I can figure.

I've got the fermenter in a warm water bath, but no movement.  Active starter going in later today.

[HoosierBrew]

Fermenting like mad in the FFT.  Stalled at 1.040 in the fermenter.  Apparently the bread yeast works just fine.

Weather's been so crazy here lately I must have had a temp drop in the basement that stalled it out.  All I can figure.

I've got the fermenter in a warm water bath, but no movement.  Active starter going in later today.

That should hopefully help it finish up nicely then.

[Joe Sr.]

Here's hoping.

[brewinhard]

Yeah, it's helful to judge whether a beer stalled or is at FG. Also is helpful for knowing when to keg a beer for spunding. Cheap n easy.
 

Can't this be done without any additional yeast added as well?  Just pulling some wort (small sample) from the fermenter and using the yeast present to quickly ferment it out on a stir plate?

[HoosierBrew]

Yeah, it's helful to judge whether a beer stalled or is at FG. Also is helpful for knowing when to keg a beer for spunding. Cheap n easy.
 

Can't this be done without any additional yeast added as well?  Just pulling some wort (small sample) from the fermenter and using the yeast present to quickly ferment it out on a stir plate?

Yeah, I'm doing it on brew day now for spunding, unless it's a recipe I've brewed before. But you can do it after fermentation obviously if you think you stalled.

Edit - I use bread yeast for both. I dont see why your method wouldn't work fine. Force of habit.

[The Beerery]

After you oxygentate/stir yeast in pull your FFT from that. Easy peasy.


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[brewinhard]

After you oxygentate/stir yeast in pull your FFT from that. Easy peasy.


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No need to pull it after a couple days of fermentation then? There will be enough yeast in suspension to tackle the small job?

[The Beerery]

Yup I put mine on a stir plate at room temp.  Solid.


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